Liquid foundation

Liquid foundation

What it is: This is what most of us think of when we hear "foundation": a fluid base that comes in many finishes—sheer, matte, anything you want.

Why you'll like it: It feels weightless on the skin, is available in formulas from oil-free to moisturizing, and can be layered to get as much coverage as you need.

How to apply: You can use your fingers or a brush, whichever you're most comfortable with. Gita Bass, a makeup artist for Simple Skincare who works with Tina Fey, likes to start from the middle of the face and blend outward. "Then gently pat a damp sponge over it to remove any excess, particularly at the jawline and around the nose," she says.